<?php

namespace Xx2025\Kingdee\Erp\Response;

use Xx2025\Kingdee\Erp\BaseResponse;
use Xx2025\Kingdee\Erp\ResponseInterface;

class GyErpTradeReturnAdd extends BaseResponse implements ResponseInterface
{
    private static $_instace;


    private string $billCode = '';

    public static function getInstance() :self
    {
        if(empty(self::$_instace)) {
            self::$_instace = new self();
        }
        return clone self::$_instace;
    }

    public function setBillCode($code)
    {
        $this->billCode = $code;
    }


    public function getBillCode()
    {
        return $this->billCode;
    }



}